Sudoku & Killer: SudoKoi
Fabian Zwick Games iPhoneiPadiPod touchMac
Sudoku & Killer: SudoKoi is a free Games app for iPhone and iPad by Fabian Zwick. Rated 4.8/5 from 64 ratings. Requires iOS 14.0. Updated March 7, 2026.
- Rating
- 4.8
- 64 ratings
- Price
- Free
- on the App Store
- Size
- 35 MB
- Age 4+
- Updated
- Mar 7
- 2026 · v1.4.2
Screenshots
About Sudoku & Killer: SudoKoi
〉No ads. No paywalls. Just great puzzles. SudoKoi is the Sudoku app that gets out of your way. Open it, pick a puzzle, and play. No account. No loading screens. No interruptions — ever. Most puzzle apps are built around ads and dark patterns. SudoKoi is built around the puzzle. 〉Everything You Need. Nothing You Don't. • Classic Sudoku + Killer Sudoku in one app • 5 difficulty levels — Easy to Expert • Smart notes and candidate tracking • Helpful highlights and error detection • Fast, intuitive number input • Play up to 9 games at once • Scan printed Sudoku puzzles from paper • Track your stats and watch yourself improve • Share puzzles with friends 〉Fits Into Your Day Whether you have 2 minutes or 20, SudoKoi is there. Fully offline. No login. No loading screens eating your time. Optimized beautifully for iPhone, iPad, and Mac. 〉Start Free. Upgrade Only If You Want To. A handpicked selection of Classic and Killer puzzles is always free — no timer, no artificial limit. SudoKoi+ unlocks everything: • Thousands of handcrafted puzzles • Unlimited play across all packs • Monthly, yearly, or one-time lifetime options Privacy Policy: https://sudoku.efabian.me/privacy/ Terms of Service: https://sudoku.efabian.me/terms/
Ratings & reviews
4.8
64 ratings
What’s new
Version 1.4.2 · Updated March 7, 2026
This update fixes an issue with the timer. If SudoKoi has become part of your daily routine, a quick review helps more players find us — and means a lot to a small indie team. Thank you.
Play today's Frostfire puzzle
Balance fire and ice: half of each in every row and column. A free daily puzzle from Fiplay, same board for everyone. It plays right here, no download.
App privacy
The developer, Fabian Zwick, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Purchases: Purchase History
- Identifiers: User ID
- Diagnostics: Crash Data
Used for: App Functionality
Alternatives to Sudoku & Killer: SudoKoi
Looking for apps like Sudoku & Killer: SudoKoi? Here are 6 similar apps on the App Store. The highest rated is Sudoku Scanner and Solver (5.0/5), and all 6 are free to download.
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Sudoku: Killer, Classic Sudoku
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Pro Sudoku
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Killer Sudoku by Logic Wiz
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SudokuSmart
4.6
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SUDOKU - TheSudoku.com
4.7
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Sudoku Scanner and Solver
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Sudoku & Killer: SudoKoi | 4.8 / 5 (64 ratings) | Free | March 7, 2026 | |
| Sudoku: Killer, Classic Sudoku | 4.7 / 5 (10) | Free | Oct 18, 2026 | Compare |
| Pro Sudoku | 4.8 / 5 (36) | Free | Aug 29, 2026 | Compare |
| Killer Sudoku by Logic Wiz | 4.9 / 5 (199) | Free | Oct 19, 2026 | Compare |
| SudokuSmart | 4.6 / 5 (19) | Free | Oct 9, 2026 | Compare |
| SUDOKU - TheSudoku.com | 4.7 / 5 (110) | Free | Feb 8, 2024 | Compare |
| Sudoku Scanner and Solver | 5.0 / 5 (1) | Free | Apr 16, 2025 | Compare |